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Method for manufacturing high strength and highly wear-resisting flashboard

A manufacturing method and high wear-resistant technology, applied in the field of gate material selection and preparation technology, can solve the problems of easy cracking, gate cracking, gate failure, etc., and achieve increased strength and wear resistance, simple preparation process, Simple and advanced effects

Inactive Publication Date: 2008-03-26
SANY HEAVY IND CO LTD (CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hardness of the ram manufactured by this process is only 51-54HRC, and its wear resistance is not very good, so the service life is not long. At the same time, due to the preparation process, the ram has poor toughness, and the ram is easy to crack during use. lead to gate failure
Its essence is that the inevitable defects of the existing preparation process lead to poor wear resistance, high brittleness and easy cracking of the ram, which leads to the failure of the ram
Therefore, the quenched ram has a short service life, is easy to crack, and needs to be replaced frequently, which affects the construction process and increases construction and production costs.

Method used

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  • Method for manufacturing high strength and highly wear-resisting flashboard
  • Method for manufacturing high strength and highly wear-resisting flashboard

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Embodiment 1: A preparation process of a gate plate, using 16Mn alloy steel as the base material of the gate plate, the strength, wear resistance and corrosion resistance of this material are all better than ordinary carbon steel. First process the 16Mn alloy steel into a gate according to the requirements of the drawings, and then heat the processed gate at 200°C for 1 hour for complete annealing. After grinding and cleaning the first and second working surfaces 1 and 2 (as shown in Figures 1 and 2) of the gate plate, ion implantation of tungsten carbide is performed on the first working surface 1. The specific steps are: 1), ion Infiltrating tungsten: the vacuum degree of the treatment furnace is 5-10Pa, and the pulse current beam density is 2-2.5mA / cm 2 , the pulse frequency is 30HZ, the accelerating voltage is between 20KV, the implantation energy of tungsten ions is at 100KeV, the concentration of implanted tungsten ions is 25-30%, and the time of infiltrating tung...

Embodiment 2

[0018] Example 2: First, the 38CrMoAlA alloy steel is machined into a ram according to the drawings, and then the ram is fully annealed at 220° C. for 1.5 hours. After grinding and cleaning the first and second working surfaces 1 and 2 (as shown in Figures 1 and 2) of the ram, perform ion implantation tungsten carbide treatment on the first working surface 1, the specific steps are 1) ion implantation and infiltration Tungsten: The vacuum degree of the treatment furnace is 0.5~2Pa, and the pulse current beam density is 2~5mA / cm 2 , the pulse frequency is 70HZ, the accelerating voltage is 30KV, the implantation energy of tungsten ions is 200KeV, the concentration of implanted tungsten ions is 30-40%, and the time of infiltrating tungsten ions is 30h. After processing, the ram is slowly cooled with the furnace in the furnace, and then the ram is taken out. 2) Carburizing and quenching treatment: Put the ram that has completed step 1) into an ordinary carburizing furnace, heat i...

Embodiment 3

[0019] Example 3: Firstly, the 16Mn alloy steel is machined into a ram according to the drawing, and then the ram is fully annealed at 250° C. for 2 hours. After grinding and cleaning the first and second working surfaces 1 and 2 (as shown in Figures 1 and 2) of the ram, perform ion implantation tungsten carbide treatment on the first working surface 1, the specific steps are 1) ion implantation and infiltration Tungsten: The vacuum degree of the treatment furnace is 20-30Pa, and the pulse current beam density is 0.5-2mA / cm 2 , the pulse frequency is 80-100HZ, the accelerating voltage is 40KV, the implantation energy of tungsten ions is 300KeV, the concentration of implanted tungsten ions is 40-50%, and the time of infiltrating tungsten ions is 36h. The gate plate is taken out after the gate plate is slowly cooled with the furnace in the furnace. 2) Carburizing and quenching treatment: put the ram that has completed step 1) into an ordinary carburizing furnace, slowly heat it...

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Abstract

This invention discloses a method for making a high-intensity and high-wearing flash board to maintain its basic tenacity and improve its durability, comprising the following steps: processing alloyed steel or carbon steel into flash board given annealing treatment at 200-250 Deg. C for 1-2 hours; then polishing the acting surface of board off oxide film and washing it; executing ionic jet tungsten carbide treatment to the board comprising ionic jet tungsten and carbonization quenching. The invention jets tungsten carbide at 850-950 Deg. C, then processes carbonization quenching to form veneer with high-wearing feature, meanwhile maintain high ductility of basal body.

Description

technical field [0001] The invention relates to a manufacturing process of building machinery parts, in particular to a material selection and preparation process of a gate. Background technique [0002] The ram is one of the key parts in the concrete pumping machinery. The ram currently used is mainly quenched to increase the hardness of the ram to achieve the effect of wear resistance. However, the hardness of the ram manufactured by this process is only 51-54HRC, and its wear resistance is not very good, so the service life is not long. At the same time, due to the preparation process, the ram has poor toughness, and the ram is easy to crack during use. lead to gate failure. Its essence is that the unavoidable defects of the existing preparation process lead to poor wear resistance, high brittleness and easy cracking of the gate plate, which leads to the failure of the gate plate. Therefore, the service life of the gate plate after quenching is short, it is easy to crac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P23/04C23C10/00C23C14/34C23F17/00
Inventor 蒋建献单小宏
Owner SANY HEAVY IND CO LTD (CN)
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